2005 MERCEDES-BENZ C320 lock

333 Practical hints
Where will I find ...?
Minispare wheel (except C 55 AMG)
The Minispare wheel is located in the
storage compartment underneath the
trunk floor.
Removing the Minispare wheel
Lift up trunk floor cover and engage
trunk floor handle in upper edge of
trunk.

Loosen the retaining screw
(page 329) in the middle of storage
well casing.

Remove the storage well casing
(page 329).1Vehicle tool kit
2Arrow
3Minispare wheel
4Vehicle tool kit storage well casing

Remove vehicle tool kit storage well
casing4.

Remove Minispare wheel3.Storing the Minispare wheel

Place Minispare wheel3 in wheel
well.

Place vehicle tool kit storage well
casing4 over the Minispare wheel.
Make sure arrow2 on vehicle tool kit
storage well casing4 points in the
direction of travel.

Place storage well casing (
page 329)
over vehicle tool kit storage well
casing4 and turn the retaining screw
(
page 329) clockwise as far it will go
to secure the Minispare wheel.
iArrow2 on vehicle tool kit storage
well casing4 must point in the
direction of travel. Otherwise you
cannot place the storage well casing
(page 329) on top and secure the
Minispare wheel with the retaining
screw (
page 329).

335 Practical hints
Where will I find ...?

Loosen retaining screw3 by turning it
counterclockwise.

Remove collapsible tire1.
Storing the collapsible tire
If you wish to store the collapsible tire after
use, carry out the following steps.
Otherwise the collapsible tire will not fit
the storage compartment.

Unscrew the valve cap from the valve
of the collapsible tire.

Take the valve extractor from the
vehicle tool kit (
page 331).

Unscrew the valve insert from the valve
and allow the air to escape.

Screw the valve insert back into the
valve.

Screw the valve cap back on the valve.

Pull the protective wrap provided with
the vehicle tool kit over the collapsible
tire.

Store the collapsible tire and the valve
extractor in the storage compartment
underneath the trunk floor.

Pierce the protective wrap with
retaining screw3.

Secure the collapsible tire by turning
retaining screw3clockwise.
!Make sure the collapsible tire is dry
when storing it.
iIt may take a few minutes for the col-
lapsible tire to deflate completely.
!To prevent damage, always disengage
trunk floor handle from upper edge of
trunk and lower trunk floor before
closing the trunk lid.Warning!
G
The dimensions of the collapsible tire are
different from those of the road wheels. As
a result, the vehicle handling characteristics
change when driving with a collapsible tire
mounted.
The collapsible tire should only be used tem-
porarily, and should be replaced with a reg-
ular road wheel as quickly as possible.

337 Practical hints
Unlocking/locking in an emergency
Unlocking/locking in an emergency
Unlocking the vehicle
If you are unable to unlock the vehicle with
the SmartKey, open the driver’s door and
the trunk using the mechanical key. Removing the mechanical key
1Mechanical key locking tab
2Mechanical key

Move locking tab1 in direction of
arrow.

Slide mechanical key2 out of the
housing.Unlocking the driver’s door
1Unlocking

Insert the mechanical key into the
driver’s door lock until it stops.

Turn the mechanical key counterclock-
wise to position1.
The driver’s door is unlocked.
iUnlocking the driver’s door and/or the
trunk with the mechanical key will
trigger the anti-theft alarm system*.
To cancel the alarm, do one of the
following:

Press buttonŒ or‹ on the
SmartKey.


Insert the SmartKey in the starter
switch.

338 Practical hintsUnlocking/locking in an emergencyUnlocking and opening the trunk
A minimum height clearance of 5.71 ft
(1.74 m) is required to open the trunk lid.
The trunk lid lock is located next to the
handle above the rear license plate recess.
1Unlocking in an emergency
2Handle

Insert the mechanical key into the
trunk lid lock until it stops.

Turn the mechanical key
counterclockwise to position1.
The trunk lid unlocks.

Pull on handle2.
The trunk lid opens.

Turn the mechanical key back and
remove it from the trunk lid lock.
Locking the vehicle
If you are unable to lock the vehicle with
the SmartKey, do the following:
Close the passenger doors and the
trunk lid.

Press the central locking switch in the
center console (
page 96).

Check to see whether the locking
knobs on the passenger doors have
moved down.

If necessary push them down manually.
Except for the driver’s door, the vehicle
should now be locked.
!The trunk lid swings open upwards
automatically. Always make sure there
is sufficient overhead clearance.

339 Practical hints
Unlocking/locking in an emergency
1Locking
Insert the mechanical key into the
driver’s door lock until it stops.

Turn the mechanical key clockwise to
position1.
The driver’s door is locked.
Fuel filler flap
In case the central locking system does
not release the fuel filler flap, you can open
it manually.
The release button is on the right-hand
side of the luggage compartment behind
the side trim.1Side trim
2Release button

Open the trunk lid.

Remove the side trim1 from the
right-hand side of the luggage compart-
ment.

Turn release button2 clockwise as far
as will go.
The fuel filler flap is released.

Open the fuel filler flap from outside.
Warning!
G
If you operate the emergency release but-
ton, be careful of the sharp edges so that
you do not injure yourself.

340 Practical hintsUnlocking/locking in an emergencyManually unlocking the transmission gear selector lever
In the case of power failure the transmis-
sion gear selector lever can be manually
unlocked, e.g. to tow the vehicle.
Slide out the swiveling cup holder
(page 243).
1Tool

Insert a tool1 (e.g. flat blade
screwdriver) into the opening.

Perform the following two steps
simultaneously:
Press tool1 forward in the
direction of the arrow.

Move gear selector lever from
positionP.

Remove tool1 from the opening.iThe gear selector lever is locked again
when moving it to positionP.

341 Practical hints
Opening/closing in an emergency
Opening/closing in an emergency
Power tilt/sliding sunroof*
You can open or close the tilt/sliding
sunroof manually should an electrical
malfunction occur.
The tilt/sliding sunroof drive is located
behind the lens1 of the interior overhead
light.
Remove SmartKey from the starter
switch.

Pry of lens1 using a flat blade
screwdriver.

Slide both locking tabs2 in direction
of the arrows.

Lower the rear of the cover and
remove.

Remove the cover.

Take the crank3 out of the Operator’s
Manual pouch.

Insert crank3 through hole on the left
side.

Turn crank3 clockwise to:

slide sunroof closed


raise sunroof at the rear

Turn crank3 counterclockwise to:

slide sunroof open


lower sunroof at the rear
iDo not disconnect electrical
connectors.
iTurn crank3 slowly and smoothly.
The tilt/sliding sunroof must be
synchronized after being operated
manually (
page 230).

342 Practical hintsReplacing SmartKey batteriesIf the batteries in the SmartKey are
discharged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an
authorized Mercedes-Benz Center.Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
iWhen inserting the batteries, make
sure they are clean and free of lint.iWhen replacing batteries, always
replace both batteries.
The required replacement batteries are
available at any Mercedes-Benz
Center.